CS5E
Here is the magnificent CS5E bought for a handful of euros

For the CS5E the ad was put on LBC on May 19, 2021 and remained there until July 8, 2021 when I bought it. Ad entitled "moto yamaha RD 200"" in Grasse, Saint-Jacques district if you know. I can deduce that at that time you were very busy.
I left with my carefully prepared tool box to tear it to pieces on the edge of the pavement to fit it into my Q5 with a large thick tarp so as not to rot it.
It was missing its carburetors and its air box, which must have put off several buyers.
It turns out that I had the 2 carburettors, the complete air box and the connecting sleeves, as well as other things like new fork tubes, waiting for several years.
I was the rare profile of the ideal buyer.
I had never seen a real CS5 in my life. It does not run the streets. I had 2 opportunities to buy one, one from Claude P. in the Yvelines in the first decade of 2000 then another in Arriège in the second decade of 2000, a machine which was bought by a forum member Patrick T. At each times it was the motivation that had failed.
Here is the link to Patrick T.'s post:
https://as3-rdx-club.clicforum.fr/t1965-Ceci-n-est-pas-une-RD200-et-ce-n-est-pas-une-pipe.htmjf83